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The EcoTec Exclusive Green iQ 835 is a combi gas boiler and is Vaillant's first ever boiler built with the power of green IQ technology. This boiler has smart technology features and provides excellent performance.

It manages the consumption and output to keep the components all running with its peak performance, making it a low maintenance boiler that you can rely on. It comes with a wide modulation range of up to 1:10, giving it the ability to adapt perfectly to all systems in all situations and helping to keep your fuel bills down.

This model has an output of 35kW and is also available with the output of 43kW. It is also compatible with LPG, and is an A rated boiler for both heat and hot water with its ERP efficiency at 94%. It comes with an extra-condense heat exchanger.

As well as the green IQ mode to help optimizes the running cycle, resulting in even lower gas consumption and making it a highly recyclable boiler at the end of its life. The EcoTec Exclusive Green iQ 835 comes with 5 years warranty and 7 years warranty when you register it with an advance installer. You also have the option to purchase an extended warranty of up to 10 years when it is registered by an advance installer.